Around the Horn Posted November 6, 2017 Share #17026 Posted November 6, 2017 The howling is the motors themselves not the propulsion 1 Quote Link to comment Share on other sites More sharing options...
RailRunRob Posted November 6, 2017 Share #17027 Posted November 6, 2017 (edited) 49 minutes ago, Around the Horn said: The howling is the motors themselves not the propulsion Never heard a howling AC motor send me an example if you can? The trains CPU handles phase(Pole) switching on newer cars so sometimes if things are out of sync that can show up as heat or types or sound. A reset of the trains CPU can fix some of the that from what I know. The other thing I could think of is the Inverter IGBT (Shurgs). Are we talking a sound like the Redbirds or even some R46/68's howling like that? Interesting. Edited November 6, 2017 by RailRunRob 0 Quote Link to comment Share on other sites More sharing options...
itmaybeokay Posted November 6, 2017 Share #17028 Posted November 6, 2017 I'm not sure if this is what they're talking about - if so, sounds like, might be gearbox? Note that the inverter whine starts before the train moves, but the 'howl' seems to pitch proportional with train speed. 0 Quote Link to comment Share on other sites More sharing options...
RailRunRob Posted November 6, 2017 Share #17029 Posted November 6, 2017 (edited) 27 minutes ago, itmaybeokay said: I'm not sure if this is what they're talking about - if so, sounds like, might be gearbox? Note that the inverter whine starts before the train moves, but the 'howl' seems to pitch proportional with train speed. Indeed. If it's not the Motor Theres just 3 parts before the wheelset. The coupler and the gearbox sounds like the gearbox IMO. Interesting this is fairly new phenomenon correct? With the NTT's it happened over a period of time? Edited November 6, 2017 by RailRunRob 0 Quote Link to comment Share on other sites More sharing options...
itmaybeokay Posted November 6, 2017 Share #17030 Posted November 6, 2017 11 minutes ago, RailRunRob said: Indeed. If it's not the Motor There just 3 parts before the wheelset. The coupler and the gearbox sounds like the gearbox IMO. Interesting this is fairly new phenomenon correct? With the NTT's it happened over a period of time? Actually - Rob, what do you know about the type of bearings those trucks use? Ages ago when I had this cranky old BMW, one of the rear wheel bearings went dodgy on me and the rumble resonated through the body making it sound like I had put a giant playing card in the spokes of a 50 foot bicycle. I feel like the sound of a failed (or aging) bearing resonating through the wheels and rails could sound like this. But yeah - if it's just the gearbox, I at least don't remember this noise, which means either 1- The gearboxes are doing this as they age - which would generally be a bad sign as that means parts are different geometry than they used to be. 2- Replacement gearbox parts or gearbox assemblies do this and the old ones don't. 0 Quote Link to comment Share on other sites More sharing options...
RailRunRob Posted November 6, 2017 Share #17031 Posted November 6, 2017 42 minutes ago, itmaybeokay said: Actually - Rob, what do you know about the type of bearings those trucks use? Ages ago when I had this cranky old BMW, one of the rear wheel bearings went dodgy on me and the rumble resonated through the body making it sound like I had put a giant playing card in the spokes of a 50 foot bicycle. I feel like the sound of a failed (or aging) bearing resonating through the wheels and rails could sound like this. But yeah - if it's just the gearbox, I at least don't remember this noise, which means either 1- The gearboxes are doing this as they age - which would generally be a bad sign as that means parts are different geometry than they used to be. 2- Replacement gearbox parts or gearbox assemblies do this and the old ones don't. I’m not 100% sure on the NYC spec I believe it’s a variation of a Journaled based bearing. But I get your drift didn’t think of that I’m sure they’d have some process of lubitcation as well. But that could definitely be a possibility. 0 Quote Link to comment Share on other sites More sharing options...
MassTransitHonchkrow Posted November 6, 2017 Share #17032 Posted November 6, 2017 5 hours ago, Bosco said: While those are Kawasaki trains, those have AdTranz/Bombardier propulsion packages. Even then howling motors are not limited to those trains. There are plenty of howling Alstom-powered trains and a few Siemens sets as well. As for the cause of the howling, I'm not entirely sure but I am curious as well. I figured other parts came from elsewhere. I'm sure if you bring it up, it'll be brushed over until the real reason actually hurts someone. Then the finger pointing shall commence. 👈👆👉👇 0 Quote Link to comment Share on other sites More sharing options...
Bosco Posted November 7, 2017 Share #17033 Posted November 7, 2017 While we're on the topic, let's not forget that "howling" motors are not limited to NTTs. The R68s are some of the loudest howlers in the system. 0 Quote Link to comment Share on other sites More sharing options...
Bill from Maspeth Posted November 7, 2017 Share #17034 Posted November 7, 2017 (edited) Are the people who insisted that JYD were going to send all their R46's to CIYD this past weekend in exchange for R160's because of CBTC (as if it's being implemented next week) coming, admit they were wrong? So much for your reliable sources! Edited November 7, 2017 by Bill from Maspeth 0 Quote Link to comment Share on other sites More sharing options...
Around the Horn Posted November 7, 2017 Share #17035 Posted November 7, 2017 16 minutes ago, Bill from Maspeth said: Are the people who insisted that JYD were going to send all their R46's to CIYD this past weekend in exchange for R160's because of CBTC (as if it's being implemented next week) coming, admit they were wrong? So much for your reliable sources! When did anyone say that? 3 Quote Link to comment Share on other sites More sharing options...
S78 via Hylan Posted November 7, 2017 Share #17036 Posted November 7, 2017 (edited) 4 minutes ago, Around the Horn said: When did anyone say that? It was brought up, maybe almost a year ago. Edited November 7, 2017 by S78 via Hylan 0 Quote Link to comment Share on other sites More sharing options...
MysteriousBtrain Posted November 7, 2017 Share #17037 Posted November 7, 2017 50 minutes ago, S78 via Hylan said: It was brought up, maybe almost a year ago. Probably because I didn't hear anything about a swap this weekend recently. 0 Quote Link to comment Share on other sites More sharing options...
RailRunRob Posted November 7, 2017 Share #17038 Posted November 7, 2017 (edited) 11 hours ago, Bosco said: While we're on the topic, let's not forget that "howling" motors are not limited to NTTs. The R68s are some of the loudest howlers in the system. So you have two very different types of motors making the same types of sounds? I remember it on the SMEE cars. Kinda why I didnt understand the sound on AC motors. To @itmaybeokays point really could be something with the Wheels/ bearings? That seems the common components on both types. Some type of friction in that area no? Edited November 7, 2017 by RailRunRob 0 Quote Link to comment Share on other sites More sharing options...
Bosco Posted November 7, 2017 Share #17039 Posted November 7, 2017 54 minutes ago, RailRunRob said: So you have two very different types of motors making the same types of sounds? I remember it on the SMEE cars. Kinda why I didnt understand the sound on AC motors. To @itmaybeokays point really could be something with the Wheels/ bearings? That seems the common components on both types. Some type of friction in that area no? The AC motors by design are 'frictionless,' so any howling has to come from mechanical components. I would imagine it's either the wheels/bearings or possibly the gearbox. 0 Quote Link to comment Share on other sites More sharing options...
RailRunRob Posted November 7, 2017 Share #17040 Posted November 7, 2017 1 hour ago, Bosco said: The AC motors by design are 'frictionless,' so any howling has to come from mechanical components. I would imagine it's either the wheels/bearings or possibly the gearbox. Indeed there brushless. That's what we were saying yesterday. 0 Quote Link to comment Share on other sites More sharing options...
JTrainUK Posted November 7, 2017 Share #17041 Posted November 7, 2017 I can’t provide a link right now as I’m on my phone, but a few hours ago, a couple of videos were posted onto Youtube of some trains running via the to Bay Ridge! Certainly not the most common diversion, almost reminiscent of the ! 0 Quote Link to comment Share on other sites More sharing options...
Around the Horn Posted November 7, 2017 Share #17042 Posted November 7, 2017 1 hour ago, JTrainUK said: I can’t provide a link right now as I’m on my phone, but a few hours ago, a couple of videos were posted onto Youtube of some trains running via the to Bay Ridge! Certainly not the most common diversion, almost reminiscent of the ! LOL that took place last week 0 Quote Link to comment Share on other sites More sharing options...
Lawrence St Posted November 7, 2017 Share #17043 Posted November 7, 2017 1 hour ago, JTrainUK said: I can’t provide a link right now as I’m on my phone, but a few hours ago, a couple of videos were posted onto Youtube of some trains running via the to Bay Ridge! Certainly not the most common diversion, almost reminiscent of the ! And like always, most trains were signed up as last stop. I still think that in the event of an emergency reroute, conductors should be allowed to change their program to whatever line they'e running on to minimize confusion. 0 Quote Link to comment Share on other sites More sharing options...
BDNQ2345 Posted November 8, 2017 Share #17044 Posted November 8, 2017 Today is an anniversary of the train came back 0 Quote Link to comment Share on other sites More sharing options...
VIP Posted November 8, 2017 Share #17045 Posted November 8, 2017 Why are R32’s getting their roofs painted? Nothin was wrong with them in the first place. Money spent for nothing. 1 Quote Link to comment Share on other sites More sharing options...
R68OnBroadway Posted November 8, 2017 Share #17046 Posted November 8, 2017 (edited) 9 minutes ago, VIP said: Why are R32’s getting their roofs painted? Nothin was wrong with them in the first place. Money spent for nothing. Probably SMS. If not, it's part of Cuomo's crap agenda which also includes turning Penn into a mall and painting R160s into daycare centers. Edited November 8, 2017 by R68OnBroadway 1 Quote Link to comment Share on other sites More sharing options...
Quill Depot Posted November 8, 2017 Share #17047 Posted November 8, 2017 I've had enough of Cuomo. He's incredibly inept and thinks wrapping R160s is gonna chance public perception. 0 Quote Link to comment Share on other sites More sharing options...
RR503 Posted November 8, 2017 Share #17048 Posted November 8, 2017 (edited) 1 hour ago, BDNQ2345 said: Today is an anniversary of the train came back First day, first train, first stop: (this was back before I really knew how to use a camera) Edited November 8, 2017 by RR503 4 Quote Link to comment Share on other sites More sharing options...
BDNQ2345 Posted November 8, 2017 Share #17049 Posted November 8, 2017 8 hours ago, RR503 said: First day, first train, first stop: (this was back before I really knew how to use a camera) Wow, nice 0 Quote Link to comment Share on other sites More sharing options...
MysteriousBtrain Posted November 8, 2017 Share #17050 Posted November 8, 2017 Apparently an R46 appeared on the to 2 Av, which means that there was an R46 today as well. 0 Quote Link to comment Share on other sites More sharing options...
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